MAX9722BETE+ Maxim Integrated Products, MAX9722BETE+ Datasheet - Page 7

• Manufacturer Part Number: MAX9722BETE+
• Description: IC AMP AUDIO .13W STER AB 16TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9722BETE+

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 130mW x 2 @ 32 Ohm
• Voltage - Supply: 2.4 V ~ 5.5 V
• Features: Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(MAX9722A, PV
THD+N measurement bandwidth = 22Hz to 22kHz, T
THIN QFN
9, 13
10
11
12
14
15
16
—
EXIT SHUTDOWN TRANSIENT
1
2
3
4
5
6
7
8
Stereo Headphone Amplifiers with Shutdown
PIN
200μs/div
TSSOP
11, 15
DD
10
12
13
14
16
—
5V, Differential Input, DirectDrive, 130mW
3
4
5
6
7
8
9
1
2
= SV
_______________________________________________________________________________________
DD
NAME
PGND
SGND
OUTR
SHDN
OUTL
PV
SV
MAX9722 toc31
INR+
PV
SV
INL+
= +5V, PGND = SGND = 0V, SHDN = SV
C1P
C1N
INR-
INL-
EP
DD
DD
SS
SS
SHDN
2V/div
OUT
500mV/div
Charge-Pump Power Supply. Powers charge-pump inverter, charge-pump logic, and oscillator.
Connect to positive supply (2.4V to 5.5V). Bypass with a 1µF capacitor to PGND as close to the
pin as possible.
Flying Capacitor Positive Terminal
Power Ground. Connect to ground.
Flying Capacitor Negative Terminal
Charge-Pump Output. Connect to SV
Signal Ground. Connect to ground.
Noninverting Right-Channel Audio Input
Inverting Right-Channel Audio Input
Amplifier Positive Power Supply. Connect to positive supply (2.4V to 5.5V). Bypass with a 1µF
capacitor to SGND as close to the pin as possible.
Right-Channel Output
Amplifier Negative Power Supply. Connect to PV
Left-Channel Output
Inverting Left-Channel Audio Input
Noninverting Left-Channel Audio Input
Active-Low Shutdown Input
Exposed Paddle. The exposed paddle can be either connected to PV
isolated copper plane. Do not connect to PGND, SGND, PV
Typical Operating Characteristics (continued)
SHUTDOWN TRANSIENT
A
= +25°C, unless otherwise noted.)
400μs/div
DD
MAX9722 toc32
, C1 = C2 = 1µF, R
SS
.
FUNCTION
SHDN
2V/div
OUT
500mV/div
SS
.
L
= ∞, gain = -1V/V, single-ended input,
POWER-UP/DOWN TRANSIENT
DD
, or SV
Pin Description
20ms/div
SS
DD
or a small electrically
.
MAX9722 toc33
V
2V/div
OUT
5mV/div
DD
7